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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cb0be57a7085ccb72b3cc60c5547c4fd57ec3acee1b079ccd54d963d1de188d3' 
  AND token = '1sHCNpb8E4Iu7vebz4jA7KognI0GF5K90OBu4djpRck=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}